Waste of money. At first, it didn't work at all. I thought it was broken. Now, it works without the dog barking (German Shepherd), just when the poor thing shakes its head or scratches. DIS-AP-POINT-ING

Incredible. It stopped the barking. However, it broke easily, didn't last even a month. It's so cheap anyway, that I would give the money once a month to have our peace. Anyway, we only put it on when it started again and it learned not to bark too much.

It worked for a while (but I had to change the battery every month), but my dog got injured when I wrapped it with the second collar. I won't buy it again. It does the job, 4 stars

Very sensitive... It would trigger with my voice. Even with the barking of neighboring dogs... I do not recommend it.

I have tried this specific product on an older dog that I had, I decided to give it a try and I suffered in pain when I touched its collar. Not to mention that any kind of electronic collar is considered passive abuse and if someone gets caught using it, they will be fined 300 euros (I almost got fined for it, that's why I'm informing you). Stay away, it hurts your little animal a lot

I had hope but the "you get what you pay for" applies here.
Bad device. It makes a noise when it hears various sounds, even when we shout, but when the dog barks, the device has no reaction. Complete failure.

In the Trash, wasted money, this hits on its own, the dog laughs with it and with me with what I put on him to stop barking!

Value for money, it does its job correctly. As for the negatives, I would mention that it doesn't have an on-off switch, but for its price, it's great. From the first use, the barking stopped and it is calm as it should be.

I have two dogs. The first dog didn't work as it probably has thick fur or skin and didn't feel the electric shock. With the second dog, it worked perfectly when the first one barked. We found our peace, both us and our neighbors! Very good value for money! Sometimes when the dog shakes its head, it just makes a sound and gives the wrong message, but it's okay.

It is very effective. Our dog used to disturb the neighborhood with its barking at inappropriate hours and had put us in a difficult position. From the first day it wore the collar, the barking stopped and we all calmed down. After one day of use, the barking stops at the first warning sound and there is no need to activate the electric shock. I believe that in a few weeks, if I remove it from its neck, it will subconsciously not bark again.
P.S. On the first day, the dog was a little scared, which is understandable.

It does the job it's supposed to do, but the barking doesn't stop. On the contrary, it scares and barks even more!

For its price, you can't expect something perfect. The negative aspect is that even with the dog's running, it warns and the dog is afraid to move. As a result, you have a scared dog that is afraid to make any movement for fear of not hearing the noise. It does work well for barking, with the sound, and there's no need to hit it to stop. I rate it 3 because its siren has a high sensitivity

It is very good, worth its money for those of you who are looking for something convenient. I put it on a German Shepherd male dog, who with his loud voice can be heard from two blocks away and the neighbors look at you with suspicion. It has 3 low levels and 3 high levels (presumably power intensity but could also be sensitivity). Its battery lasts almost 1 and a half months. The dog never barks, and when he does, first a sound is emitted to let the dog know what is coming next, and then comes the electric shock. He has only been shocked once and since then, the dog calms down with just the sound. Within 30 seconds of hearing the sound, if he barks, he gets shocked. But it is difficult because the dog calms down as soon as he hears the sound, so it makes for a quiet neighborhood. I only use it in the mornings when I'm away and if needed, at some other times during the day, so it doesn't need to be on him 24/7